wait…that raises a paradox
1) If they can't defeat you, they have to be just at least infinitesimally lower than your skill, but not over, because you have to defeat them every single time. And that means that no 50/50 chance, because that way, they have a chance to defeat you.
2) That means nobody can be equal in skill, because everyone has to be weaker than everyone.
3) However, the strongest person then has to be weaker than the weakest person, and vice versa.
4) Heaven is a place of non-discrimination, so everybody must have this ability. Therefore, there is no starting point as to who gets to defeat who, because defeat is not a concept in heaven.
I'm breaking my head right now
I'm glad that this type of thing doesn't happen in heaven